General rules about fitting say that @ 6'3" you want 1/4 to 1/2 extra length. This can be done to any club by buying a set with this spec or buying shafts and have them installed to this spec.

The stiffness will get weaker the longer it gets, so you might want to get a level stronger if you go with the 1/2 inch. A 1/4 inch longer may not need it, but it is a good thing to demo with different lengths and stiffnesses to see what you like.

As for the recomendation of clubs. Its all about price. Don't worry about the hight. That has no barring on the price. Unless you have to purchase a used set of faces and buy shafts for the right length, that will cost extra. The trick is to find them in the right length. If you can't, then you have to pay a little more.

If you want to get cheaper, you can put an extender in the grip to make the club longer, but I generally don't recommend it. It changes the flex point and the swing weight which could have negative affect. If you just have to have the clubs and can't afford the sfafts, then play with the length it came with for a while and see if you can get away with their length. If not start putting one shaft in at a time when you can afford them. Start with the longer clubs first. But this will create a little gap in the shorter club and the longer one, but this is if you have to do it this way.