IMO your biggest bang for buck will come from upgrading the pc on that 805. ICs will help too though on the BJ level not as much.
That's what I've found out on my own 805 + Butler 5150, using Audio Art cables, Micro Pearls, and even a pair of MIT Shotgun S2. The power cord made lots bigger diffs than the ICs, and rather set the table for them by adding or allowing more bass response, detail, and a more enveloping staging or presentation.
Don't they have a return if not happy thingy at Blue Jeans? I think so if it's not a special configuration. They're nice people so just ask & see.