If you are pulling the trans with the engine you are going to want to fasten those "L" brackets securely to those accessory holes on the end of the heads.
You should figure out what that crap is in those holes and clean out at least one of 'em with a drill bit (not too big) then a tap. I think they are size 3/8-16. Or leave it and just use a hole that isn't pluged up.
Ya might wanna pull your distributor so the chain doesn't hit it and damage it.
As far as the engine stand, once you get the transmission off, you might be able to use those bolts. If they are not long enough just buy some cheap ones at your local home store. They don't have to be any special grade just to hold the engine on the stand. If they are long enough it should be no problem.