Glass larger than neg and paper being sucked down completing the neg sandwich will be just fine. If you are happy with all of your other stuff for enlarging then use it for the contacts. If you are looking for Darkroom GAS justification then go Alt process. Otherwise what you have will work just fine and dandy. Remeber you are doing this to relax. The less thought the better. When I printed in a regular darkroom I liked the forte WT fiber paper, not even sure it exists anymore. Illford was nice too.