You should get some good feedback on this, as loads of people have changed their SR consoles.
If you can't/won't glass the console & seat base into place and want to go down the 'glue & screw' route, then Sikaflex is excellent, but you'd be advised to use lots of Stainless Steel Screws into the deck. Make sure your console and seat have a good substantial flange and fix into the deck at 75-100 mm centres.
Needless to say, ensure the deck finish is in good shape where the flanges mate up. You should have scope to allow 15mm of screw under the flange before it penetrates the underside of the deck.
I'm surprised to hear that you have enough space to fit a rear bench and jockey console in a SR4. They seem quite cramped with just a jockey.
Offsettingthe console is an option, but make sure you have enough room for your feet, as these boats aren't too wide!
Post some pics during the job.