Better check the line capacity (in CFM) for all the loads you have hooked up.

In additon to correctly sizing for the loads, for iron pipe:

1. The pipe must be sleeved where it passes through the wall.

2. It must have a dielectric fitting not more than 6" above grade where it transistion from above grade to below grade at all above grade to below grade transitions.

3. All pipe below grade must be factory wrapped and all fittings must be field wrapped to the same level of protection as factory wrapped pipe.

4. All above grade piping must be bonded to the house electrical grounding system.

5. There must be a shutoff valve in the close proximity of all gas fixtures.

6. The final fitting on the iron pipe is determined by the type of connector used to make the final connection. In my jurisdiction it must have a union and it must be iron pipe all the way to the gas regulator.