generally talking, Left arm over to start to the right hander, especially early on. They will have a tendency to feel outside off for the ones that go straight on, and they will fall over or be trapped on the crease plumb in front. Having said that, if you find that a player is strong through the covers, your option is to swing it in to the pads to tight them up.
Me personally, batting wise, i like your round the wicket, i havn't struggled much with that as of yet. And i've been known in the past to dispatch left arm overs all through the leg side, especially v Eastbourne.. it was their captain, we were 103 for 8... he didnt like me driving him past mid on on more than on occasion!