amazing how good it looks after a clean up, real gem
as others have said, change the belts before
you attempt to start it.
check it turns over by hand, whip the plugs out to make things easier, then make sure it doesn't have any tight spots where rust may have built up in the bores.
if it all turns ok then fit the belts. makes no sense it getting it running then fitting them afterwards, you only need to do them once so best not to take chances.
would also take the cam covers off and give it a squirt of oil over the cams. on the subject of oil, drop it out and put some fresh in.
rubber (or more accurately, fibrous) fuel pipes WILL
start to spray fuel everywhere over the engine so replace them.
any fuel still in the tank will be worse than useless, will cause you real greif if you manage to get any up to the carbs so don't bother trying. when you get new fuel pipe up to the carb then simply put a length into a 5 litre can of fresh fuel.
once you have it all running then you can drop the tank and sort a more permanent solution.
don't ignore the tyres too. having been stood on them for so long they will have become very distorted and now have flat spots. going up the road with them on could well cause a blowout!
great car, shame it hasn't got any old mot's with it because i doubt it even had its' first one