I'd not care for the enhanced bt, do you really need and use that? base-bt works just fine for calling (redial and adress book). folding (and dimming) mirrors are nice, but I'd rather have the heated seats first. Don't touch the vis-package, as it contains the xenons and you do not wanna lose those for stupid BT, a different color or the heated seats. Also you lose rainsensor, autodimming int. mirror and other stuff.
If I checked correctly, your #1 is 25515gbp listprice. #2 is 25500gbp, #3 is 25245gbp.
So I'd say #1 but replace enhanced bt with heated seats, maybe add estoril, you seem to want it. with estoril you don't need sun prot to make it look better, so you could get rid of that. So #1 with heated seats, estoril but only simple BT and no sun prot would be 25750gbp, or 26015 if you wanna keep the sun prot.
Just my 2ct