diff --git a/testground/README.md b/testground/README.md
index 544c2f4825..2b5d72ae4a 100644
--- a/testground/README.md
+++ b/testground/README.md
@@ -81,17 +81,30 @@ You need to have the `cronosd` in `PATH`.
 
 ```bash
 $ nix run github:crypto-org-chain/cronos#stateless-testcase -- gen /tmp/data/out \
-  --validators 3 \
-  --fullnodes 7 \
   --hostname_template "testplan-{index}" \
-  --num_accounts 10 \
-  --num_txs 1000
+  --options '{
+    "validators": 3,
+    "fullnodes": 7,
+    "num_accounts": 10,
+    "num_txs": 1000,
+    "config": {
+      "mempool.size": 10000
+    },
+    "app": {
+      "evm.block-stm-pre-estimate": true
+    },
+    "genesis": {
+      "consensus.params.block.max_gas": "163000000"
+    }
+  }'
 ```
 
-* `validators`/`fullnodes` is the number of validators/full nodes.
 * `hostname_template` is the hostname of each node that can communicate.
+* `validators`/`fullnodes` is the number of validators/full nodes.
 * `num_accounts` is the number of test accounts for each full node.
 * `num_txs` is the number of test transactions to be sent for each test account.
+* `config`/`app` is the config patch for config/app.toml.
+* `genesis` is the patch for genesis.json.
 
 ## Embed the data directory
 
diff --git a/testground/benchmark/benchmark/peer.py b/testground/benchmark/benchmark/peer.py
index 8b480408ef..eb49fd5a7c 100644
--- a/testground/benchmark/benchmark/peer.py
+++ b/testground/benchmark/benchmark/peer.py
@@ -39,7 +39,7 @@ def bootstrap(ctx: Context, cli) -> PeerPacket:
 
     if ctx.is_fullnode_leader:
         # prepare genesis file and publish
-        genesis = gen_genesis(cli, home, peers)
+        genesis = gen_genesis(cli, home, peers, {})
         ctx.sync.publish("genesis", genesis)
     else:
         genesis = ctx.sync.subscribe_simple("genesis", 1)[0]
@@ -94,7 +94,9 @@ def init_node(
     return peer
 
 
-def gen_genesis(cli: ChainCommand, leader_home: Path, peers: List[PeerPacket]):
+def gen_genesis(
+    cli: ChainCommand, leader_home: Path, peers: List[PeerPacket], genesis_patch: dict
+):
     for peer in peers:
         for account in peer.accounts:
             cli(
@@ -109,9 +111,10 @@ def gen_genesis(cli: ChainCommand, leader_home: Path, peers: List[PeerPacket]):
     return patch_json(
         leader_home / "config" / "genesis.json",
         {
-            "consensus.params.block.max_gas": "81500000",
+            "consensus.params.block.max_gas": "163000000",
             "app_state.evm.params.evm_denom": "basecro",
             "app_state.feemarket.params.no_base_fee": True,
+            **genesis_patch,
         },
     )
 
diff --git a/testground/benchmark/benchmark/stateless.py b/testground/benchmark/benchmark/stateless.py
index 5885c14a50..8afe3b7c90 100644
--- a/testground/benchmark/benchmark/stateless.py
+++ b/testground/benchmark/benchmark/stateless.py
@@ -42,14 +42,17 @@ class CLI:
     def gen(
         self,
         outdir: str,
-        validators: int,
-        fullnodes: int,
         hostname_template=HOSTNAME_TEMPLATE,
-        num_accounts=10,
-        num_txs=1000,
-        config_patch={},
-        app_patch={},
+        options={},
     ):
+        print("options", options)
+        validators = options.get("validators", 3)
+        fullnodes = options.get("fullnodes", 7)
+        num_accounts = options.get("num_accounts", 10)
+        num_txs = options.get("num_txs", 1000)
+        config_patch = options.get("config", {})
+        app_patch = options.get("app", {})
+        genesis_patch = options.get("genesis", {})
         outdir = Path(outdir)
         cli = ChainCommand(LOCAL_CRONOSD_PATH)
         (outdir / VALIDATOR_GROUP).mkdir(parents=True, exist_ok=True)
@@ -67,7 +70,7 @@ def gen(
 
         print("prepare genesis")
         # use a full node directory to prepare the genesis file
-        genesis = gen_genesis(cli, outdir / FULLNODE_GROUP / "0", peers)
+        genesis = gen_genesis(cli, outdir / FULLNODE_GROUP / "0", peers, genesis_patch)
 
         print("patch genesis")
         # write genesis file and patch config files