I’m gonna go out on a limb and say that even if the OP doesn’t have all the proper tools, based on what he does have or will be getting (crank extractor) he’ll probably be okay. Yes the proper tools made for the specific job are ideal but we’ve all been there.

Working on the Allez, I couldn’t find my round head pin spanner when getting out the BB, so I instead used a punch and gently tapped from the side to loosen it. Worked just fine.

I don’t think anyone should go on a 70mi ride with the BB half hanging out of the bike lol, but if he can get the cups tight, the bearings greased, and the spindle spinning smooth, he’ll be alright