Base yourself at a friendly farm strip and do most of the maintenance on site with a friendly engineer who will let you assist in doing much of the donkey work such as unscrewing cowlings, changing the oil filter etc and you will cut costs considerably.
You will also learn a lot about your aircraft and be in a much better position to realise when things are amiss on your daily walkround.
QDM
P.S. I understand that at Booker the proprietors will not let owners do anything at all to their aircraft in the hangar. Outrageous!