Makes no odds to me, I bake loosely from recipes both metric and US cup-style, by loosely I mean eyeball measurements ya know about 2-1/2 cups of flour + about 2Tsp of baking powder for American recipes and loosely but a tad more precise 350g of flour and 30mL of oil for metric recipes
Though I still have and use some US recipes, metric is by far more convenient for a few reason:
1. You will probably start collecting recipes here from friends and magazines etc. They will be metric.
2. You will probably start to build up your collection of pans if you're gonna be here for a while.
3. I find it more precise, i.e. is that a packed cup of brown sugar? no it is 400g. Period. 400g; packed, pressed or whatever
Invest in a good and easy to use counter top scales. An additional bonus to a countertop is that all your food here is labeled in metric so if you watch what you eat it is easy to measure 100g of nuts or 30g of cereal etc.
REALLY USEFUL TIP Find a handy temp conversion chart (make sure it has the 3 scales.- F, C and Gas Mark), print it out and stick it on the inside of a cupboard door so you ALWAYS have it to hand. Nothing worse than not being able to convert 400F to xxxC as you don't always have them in recipe books and you will need at some time, at least for a while.
Happy baking