cheeky offer a day or three from the end of the month may be worth a punt.
Re financing, have alook at an unsecured bank loan - may be cheaper than dealer finance and it wouldn't be recorded against the bike (so arguably easier to sell when the time comes). The bike is yours from day 1. Just a thought.
You won't get £1k towards your deposit and some reckon that cash buying is of no benefit to a dealer these days and may not get you the discount it might have done 'back in the day', but shouldn't take more than 5 minutes to get a quote and see how it stacks up.
Whatever deal you do, be brazen - just keep asking. The worst that'll happen is they'll say no.