H
Hulloo
Good news, you should be OK, one tip, cut all your boards first and dry lay, leave a 5mm gap around the perimeter, also stagger the boards ( brick bond) leave 2mm/3mm gap between boards, take up one board at a time, glue and screw each board so the adhesive is still wet. Once you have glued and screwed all the boards. Tape all the joints with an alkali resistant tape, depending on the make of your boards, this will prevent cracking on the joints
Must i use flexi adhesive to secure the boards down seeing as the screws will be holding them in place. Reason i'm asking is i have the 1 back of flexi adhesive enough to cover the area of floor tiles require but have quite i bit of the non flexi wall/floor adhesive leftover......Just me being a cheapskate