Having recently started again shaving with a straight (after my old straight fell down and broke ) I ordered some stuff and would like your opinion if they would be enough.

I ordered some 0.25 diamond paste, a russian leather 2" wide DOVO strop, a DOVO 5/8" CS with bone handle, a R.A. Rooney silvertip brush, a stand and finally a 175x40mm select grade coticule.
I already have a 5/8" SS Tuckmar, a paddle strop, filarmonica brown paste and a double sided hone of unknown grit size and origin . If I had to guess I would say it is comparable to a Norton 1000/4000.

My question is this will the coticule be enough followed by the 0.25 paste?
Should I have gotten also some 0.50 paste?
I also read that there is no difference in the result you get from a select grade to a first grade coticule. Is that true according to your experience?
My reasoning when I made my purchase was that I can get my razor sharp enough to shave (although not as smooth as I would like) with the use of my hone, the filarmonica paste (which by the way seems to be extremelly coarse since it scratches the hell out of my razor ) and the strop.
So I thought that even with a little more work I could use only the coticule (ommiting something like a 8000 Norton), then go on to a pasted side of my strop with 0.25 diamond paste (again requiring a bit more work since I will not use the 0.5) and finally stropping on the hanging strop.
Am I right in thinking this will work?