Your posts make interesting reading and are full of issues that will fight against each other.
If it helps I would first put in order the things that are important to you and then fill that with the things you would like as a bonus.
Be honest with yourself - if you want the look and feel in the hand of a combat auto-loader then say so as you'll only come back to it later
although this does come with the caveat that you need to accept that such guns are really just fun items and real accuracy is not their forte.
If accuracy and shot placement is important, then personally I'd recommend starting with a recoiless pistol to get the basics of hold, sight picture, trigger release and follow-through.
When you have mastered this I'd maybe trade to a springer if thats what you want to do.
If you do it the other way around theres a good chance you'll get frustrated at the apparent lack of accuracy and it'll get slung in a draw or sold.
HW45's are OK and well made, however they are not particularly pleasant to shoot TBH and have a habit of dieselling like a bastard (I've had 2 in both calibres and sold them both for what thats worth).
Personally I think the suggestion of an HW40 was a good one as a starting gun, its recoiless with a decent trigger and capable of placing shots accurately enough to say any misses are down to you and not the gun.