A few comments that come to mind
1. Take photos
The most important, and often neglected once getting into the technical side of printing.
2. Get a decent monitor - (am thinking of the BenQ SW27OOPT)
Yes, I have one of these at the moment
3. Get a calibrator for the monitor (am thinking of the Xrite il Display)
The sw2700 supports several different calibrators - you will be using it with the BenQ software
I looked at it a while ago, and tried several with it.
http://www.northlight-images.co.uk/reviews/monitor/benq-sw2700.html4. Get the printer. (Am thinking of the P800)
yes, a great printer. It has the advantage of size, but making larger prints requires (much) more experience and skill. Be prepared to start with smaller prints.
Patience and a measured approach will win out - I get a lot of people asking about printing and often find that enthusiasm has run ahead of skill.
5. Get paper - sample papers from different manufacturers. (Thinking of Ilford, Canson, and Epson.)
No, not yet.
As others have suggested, take the time to master one or two papers (I suggest an Epson paper with an Epson printer to start with) Yes it's may not the 'perfect' paper, but once again I've seen too many people always searching for a 'better' paper, where the real improvement would come from practice with just one paper and concentrating on the fundamentals.
Until you can quantify what it is you are looking for, it's a bit of a random effort just trying papers on a whim.
6. Find manufacturer’s and custom profiles for the papers
Not a problem if you start with a manufacturer's paper. Many paper suppliers will make profiles for you - if only buy more paper ;-)
6a. Try out work flow - Phase One Capture One
Seems rather complex to start off with - keep things simple?
This is a tricky one in some respects. Personally I've no time for Lightroom, working with Photoshop, but I know many do like it.
From my own POV, once you get to large prints (A2) you need to start paying much more attention to your whole workflow, right from taking the photos.
I'd suggest starting with LR if you are new to this. Once you know it well enough, you may well better appreciate the benefits some of us find in other software, particularly for larger work.
Others have suggested videos? Personally I hate videos as a method of learning anything, many irritate me somewhat with either pace or style BUT ... YMMV as they say ;-)
Find what works best for you, whether books, video or articles.
7. Print trial runs on sample papers
Not until you know what you are doing.
I also suggest using known good test images for initial testing, say at A4. If you can't make a good print of a test image, then you are building your efforts on weak foundations.
8. Choose paper for 17 by 23 inch prints (4:3 ration) Might have to be roll paper since sheets come in 7 inches by 22 - unless I print 16 by 22 with a border.
Not unless you own an ink and paper company - large prints need a lot more experience and skill (don't forget item 1 in your list!)
Start small - I'd even suggest not buying any large paper until you have mastered smaller prints
9. Print trial runs with chosen paper at large size
Not unless you want to waste a -lot- of paper and still not be satisfied with the results
10 Let prints dry overnight.
Yes, although I prefer several days before framing
Hope these and other suggestions make sense ;-)