The temp issue is here or there to be honest, mine sits between 50 & 70, never had fuel issues, increased fueling etc etc, the car runs fine. Had it checked out by a specialist in Bristol (Duncan Slade) and he confirmed all is ok. As long as the needle moves within a few minutes or 2-4 miles it should be ok. You can change the temp sensor if you wish, just to check.
I wouldnt worry unless of course fuel consumption is mental, running is rough etc etc.
Get that belt off and pump changed ASAP. Be sure to shop around for parts.
GSF - Supply the better filters
Euro Car Parts - Supply the better oil
Worth looking at Alfa Workshop for the timing belt kit, be sure to get the correct kit. Alfa Workshop have many guides and tech info and much much more.
Great to hear your enjoying your new toy :thumbs: