I'd start by searching for more info if I were you and read, read, read. Bike mods are very much subjective and personal. Plus there are a variety of products generally available for every mod you are interested in. And there can be differences of opinion on what is "good" versus "bad".
And you'll get far more information by searching and reading the websites (here, rc51.org and speedzilla) than you will with a few replies to this thread. There are lots of nice bikes and build threads on this forum with various mods, different parts suppliers, etc. See what you find and what you think, then ask away. Asking specific questions will help you get better answers. Doing your own research is more objective than being swayed by someone else's opinion, and you see more options bits/pieces.
For example, there are people here who have a cult love for sato exhaust for the bike. But it hasn't been made forever. I myself prefer current offerings like ladybird which have full parts availability. Both options are reasonable. Same thing with high mount versus low mount.
Without research you won't see all the options available as people won't take the time to make such a large list. Do some searching and reading, and see what you think and like.
Since you have an SP1 you are in trouble with exhaust options. That has been discussed here before lots. It means you may want to consider an sp2 swingarm swap.
A few points on items in your list.
Lots of good suspension info in the suspension forum, including stickied topics.
DHC is looking to make fairings, you should discuss with him.
As far as deals, it depends on the part and timing. Common parts should be searched to find the best deal as it can change over time. Uncommon parts often only have one source, so there isn't much comparing there. For oem, Partzilla is generally the cheapest option. The site sponsors here have some great parts prices and should be supported. Discuss with them.
Other parts stores include DHC, store.scottsms.com, kyleusa.com
If you are looking for specific parts used, post wanted ads for specific items in the correct forum. You'll get more responses than if you put a laundry list up.
Last edited by kwtoxman; 04-13-2015 at 02:37 PM.