It is tough to pass up a good deal. Those are extremely low hours. I think I put that many on in about two months in a good summer.
Good to hear you jumped on the bag. Grab the others if you are able. Ask for the Wake Makers code on the forum and that will help. Call them and they will tell you exactly what you need fittings and all for your current system. It isn't worth it to get small bags now and upgrade because you will have to without question so just it now. Even get one if you have to on the side you need. Be sure to disable any solenoids with open tubes. You will need to make or buy a Suck Gate also. Brain_rinse is selling them at a killer price right now.