Extending copper water pipe to fridge/icemaker and leaving options open
If you don't want to solder any fittings then use compression or push-on (Shark-Bite or similar).
Don't fret over issues like &quot;if I go with plan A there are 6 pipe-to-fitting connections that could fail, but if I go with plan B then there are 7 of them but it accommodates future changes..&quot; Plumbing has joints. Don't use two dozen fittings where 8 could do the job, but don't get all tangled up in optimizing a small job like this one for fittings cost or joints count or whatever.
You can add a tee now and leave a capped stub of pipe for future use, or you can just put that stop valve on the end of this thing and be done with it. Since this plumbing is all exposed, when (if) in the future you want to add a hose bibb or something you can splice in a tee at that time just as easily as you could do it today. Easier, in fact, because at that time you'll know exactly where you want the hose bibb to go whereas today you're agonizing over the possibilities of where it might eventually go.