Congrats and welcome to the club. If I may I'd suggest finding one of the square drive handles that fits the stroke adjuster, the stroke length adjuster and in the place of that handwheel on X. It also fits on the vise. It's a really handy tool to do just about everything you normally adjust on the 7b.
I'd also make sure you oil ALL the places that need oil before you try and pull it through and make sure the ways are all clear of dirt etc. I believe there is a digital version of the manual here on H-M and while it's not very comprehensive it does have a fairly complete blowup of the machine to help with disassembly. This is what folks call total loss lube so it needs a drip pan because if it isn't dripping, it isn't right.
The other thing I'd keep an eye out for is the proper tool holder as it makes life a whole lot easier. What's in the is a lathe tool and while it will work the adjustable head is the way to go IMHO. Looks like you need to find the shoulder bolt for the ratchet box linkage too. You don't want to try and run it without that linkage set up. You'll find those ratchet boxes are very hard to find and expensive if you do. Right now there is a plastic 3D printed version available on eBay on a regular basis but I have no idea if they are any good. The original vise has also become a very expensive and sought after piece but I think with some good toe clamps and backstops you can do really good work.
Good luck and have fun. I hope you find it as useful as I do. Yeah it's not very speedy but it is super cheap to run and can do stuff other machines can't do.