Combi Boiler Issue

Just purchased a new house, and need the heating sorted. I've been quoted for a Ferroli Maxima 35c Condensing Boiler. I understand that there should be a 3 degree run on the condensate waste pipe, but this is not possible in the property. So a pump connected to some flexi-hose style stuff will remove the condensate waste away, I've been told that if this pump ever fails it'll be setup to stop the boiler.
There is going to be about 7 radiators etc.
I've been quoted 3200 for the whole works, including replacement of all the existing pipes and rad's. And removal of the existing back boiler offering.
How does this sound? Any other questions I should be asking?
Also, I'm concerned about water pressure - as it seems quite low (stopcock is on fully). But I could be use to extremely high pressure in my last house. Unsure really.
Any suggestions, etc would be greatly appreciated.
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