If you're not going to be tuning the car yourself you might as well get a lower-level Hondata since it will save you a ton of money and is still suitable.

The Holley and Walbro pumps are identical. You can get the Holley "version" for $169 from Summit Racing.

I did some looking around about the SC61 and given the specified trims of the compressor it looks to be too much for a street H22 application. You won't hit its peak efficiency at all.

The best turbo options for a street H22 are either a Garrett GT28RS or GT30R. The GT28RS spools up quicker but gives up about 20 peak hp to the GT30R at the same boost level. Granted both of these turbos are over $1300 so I dunno if you wanna drop that kind of bank.

Something with a TO4E 60 trim compressor wheel will be about as good as you can get for cheap, and a TO4E 57 trim will work reasonably well also. I can't really comment on this SC61 without seeing a compressor map but from the specs I can't see it offering much of an advantage over a regular T3/TO4E, which can be had for about $200 less.