Hi again @Jessup3D, yeah, as @wirlybird said, definitely new spool holders, the ones that come with it only fit about 10% of the spools I’ve used and either need something to hold the spools on, or a lot of swearing trying to get them on/off.
The glass bed should be borosilicate and there are folks out there selling it specifically sized for the FF Pro. I’ve also got a PEI sheet on my glass bed and it works great for curing warp issues; the large one for the Lulzbot Taz is big enough to cut two sheets from (Amazon.co.uk ) it ain’t cheap (the one on Amazon UK seems to have gone up quite a bit!), but it’ll pay for itself in terms of not having to ditch warped prints all the time…
If you don’t want to go the PEI route (and you really should - it’s great), then get some 3M Blue Tape. Amazon.co.uk Wherever you get it from, make sure it’s the Scotch (3M) branded one, others may not work as well (as I’ve found out to my cost). I’d go with the 2 inch or 3 inch wide as the fewer strips you have, the fewer “joint lines” you may get on the base of the print. Make sure you apply it when the bed is quite warm so the glass has expanded some from cold or you’ll get gaps…
I’ve also fitted all metal hot ends to mine ( http://www.micro-swiss.com/product-page/29551477-6081-c30f-04fe-cece31e3ba6f ) but I’d say that’s an upgrade that you can decide (or not) to do once you’ve had the printer a while. They’re needed if you want to try some of the more abrasive exotic filaments and (in my opinion) are a better long term solution as they don’t use PTFE tubes…
Maybe some Kapton tape - I use it to hold my bed in place (yes, weird, but it works). Maybe some thermal paste - I use it between my glass bed and the heated plate to improve heat transfer though I’ve no idea if it actually does anything 
I use a paint scraper for removing prints - it’s essentially a razor blade trapped in a plastic handle, any DIY store will sell one or two types.
A good sharp knife. Don’t scrimp on the spend here, it’s got to be safe (locked), sharp and precise. Can’t say what precisely you’ll use if for, but mine seems to be in my hands every day…
A good pair of flush cutters. Cutting filament, snipping things off, etc.
