In my opinion, you should go to a B-series engine. Since you're new, and don't know that much about working on cars, a B-series engine would be your best bet seeing as you can still utilize the same Haynes or Chilton's manual without having the headache of having to have 2 manuals open at the same time trying to figure out which system is failing (the Civic components or the RSX or whatevers components). Also, the B-series can be swapped in without doing major cutting and welding to get it to mount up and can be upgraded later to another engine once you are more experienced with cars. For the K-Series engine, you will need to cut the driver-side mount to put in a new mount made specifically for the swap. Also, even with little experience, it is possible to swap a B-series engine, like the B18C1 or C5, into your Civic. Especially since the car you are starting with already has V-TEC wired. Keep in mind that Honda primarily makes it's power through higher compression ratios so the top end model engines have a harder time accepting boost than the lower end model engines.
This being said, the B18C5 has a 10.6:1 Compression Ratio. Not bad, but still pretty high. I would suggest the B18C1 for boost with a compression ratio of 10:1. This will make the engine a little more reliable and keep you away from detonation issues that may arise.
H-Series possibilities for you would most likely be the black tops. The H22A is a the Japanese and Euro version that comes in either a "Red Top" or "Black Top". Keep in mind that the Red Top H22A engines have 220HP but also have a Compression Ratio of 11:1 and the Black Tops have a Comp Ratio of 10.6:1.
The H22A4 is the North American Version and can be found in the 5th Generation Preludes in both the Base Model and the Type-SH. They produce 197HP and have a Comp Ratio of 10.6:1.