Question about stretched tire setups

[TROXZILLA]

I have a two part question. I'm currently running a staggered 19X9.5 +22 F, 19X10.5 +12 R setup, with 265/35/19 and 295/30/19 tires, respectively. I'd like to move to more of a stretched tire setup. Nothing crazy, probably more mild. I'll post some pictures (attached) below of a side profile of my current setup and then two photos of more of the look I'm going for, which was from a previous forum member (Calvin, who many of you know, he had a great build thread). My first question is: based on my current setup, what tire size(s) should I go to for a mild stretch, like the yellow one in the photos? My second questions is more in regards to performance. I've read that with a stretched tire setup you lose some performance handling and are not able to be as aggressive, say if you're running mountain roads. But is that case for ALL stretched tire setups, even something mild? I don't really plan to do much Mountain touring or auto X'ing, but I'd like to be able to take some fast turns and hit a mountain road every once in a while. Is there really that much performance lost? Sorry for the long post. Appreciate the info.

Z wheel 1.jpg

Z wheel rear.jpg

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