KASEI wont be purchasing BPO's, MAADI - once the POS is up (assuming my tickets on wtf is going with my corp standings in KASEI ever gets answered) - will transfer BPO's it needs copies off, research done and such to KASEI for those to be done there at the tower, free of queues

However if you are mucking about learning it then time-research is as good as anything to do nor now until the tower is in place and the surrounding infrastructure.
As for purchasing BPO's for MAADI's stocks - you have access to the wallet iirc so dont worry too much, although check npc market vs contract if you see packs on unreaseached BPO's on contacts, as often times people are trying to off load them for a greater figure than the npc's sell them at!
I'd suggesting concentrating on stuff that would also be useful inhouse in MAADI - guns, ammo, shield/armor mods etc etc