i walk new guys through this about twice a year. there are two piles: the stuff that's about you, and the stuff that's about the truck.
about you, do now, no truck needed. USDOT number and MC authority, filed online with FMCSA. a BOC-3, which is a process agent filing, cheap, a blanket company does it for you. UCR for the year. then the authority sits pending until your insurance company files proof of coverage and the protest period runs out. figure four to six weeks total for that part.
about the truck, needs the VIN. insurance adds the unit. the 2290, filed electronically, you get the stamped Schedule 1 back the same day most of the time. IRP apportioned plates through California DMV, they'll want the Schedule 1, proof of ownership and your USDOT. IFTA is a license for you plus decals for each truck, through the CDTFA in California. for CARB, the truck has to have a 2010 or newer engine and you register it in their Clean Truck Check system and pay the yearly fee. and California wants a Motor Carrier Permit from the DMV.
the gap you're worried about is smaller than you think. conaways puts the truck on a transport 48 to 72 hours after your wire is verified, and the posted max is 14 days in the lower 48. if pile one is done before you bid, two weeks is plenty for pile two.