There is a planet generation Save. It is automatically created and can be shared. Do note however that a bulk of the game data is carried in the savegames, so very old bugs can come from using saves from old versions.
Additionally it's in the middle of a radiation hazard and any unit outside of my capital hex starts taking rads. I've tried a bunch of times and don't seem to be able to make any headway at all for obvious reasons.
How much Radiation?
Radiation Hazard is generally the least dangerous Hazard in the game. If you do not get at least 400 past protection, it does not even cause Losses. There is still a relevant morale and Readiness impact, but no losses.
But for the cases that they are, there are workarounds:
Being on a asset is a massive reducer, at -400 Rad per asset.
But usually a bit hard to do, as it also means the asset can be damaged in combat. Nevermind the part where you propably lack enough assets to use them for more then a rest-stop.
You should start with the Tech for Environmental suits, wich gives you -100 Rad (200 with the Filters passive Tech). At combat Armor we are at -300 Rad.
Battledress and Vehicle are -500 Rad.
Basically Environmental Suits and better negate any hazard but the most severe radaition.
If your units are not euqipped by them, get a Model Council ASAP to change that. I equip them on all my guys anyway, unless I get better armor (wich gives more Rad and same Environmental protection).
The bottleneck isn't the number of recruits though, it's the IP isn't it? Without Industry I you're stuck with the trickle of industry points from service tax and you can't spam infantry battalions while building Industry I, which takes quite some time without metal production. But you can't get the metal production while spamming the battalions either...
Unless you do something wierd like giving other units less armor then your Infantry, Infantry is the cheapest Model. By a long shot.
You do get some IP from Private Economy and the Service Tax. And some metal from the Recycling asset. Wich you should nationalize ASAP - the Rare Metals sell for 5 each!
Personally I started starting on Techlevel 4. It gives you a lot more Weapons Tech, a private light Industry and a already nationalized Recycling asset.