you can trackstand with overlap of course, since all njs frames (i assume most track frames) will give you some overlap unless you are using 165 cranks with size S (or maybe M) mks clips and have a resonable long top tube length. Zefal are very long. L size is 1.7cm longer than njs mks steel L size.
I just changed from zefal to MKS 2 days ago, and measured the difference. Both are cheap too.
but....if you start riding backwards in circles or want to change directions you are trackstanding, etc...you will have problems with overlap.
I have had 3 frames as my daily bikes in the past 10 days, 2 were way too small, just to get me by, and now I have one that fits. The 520 and 530 frames I had overlapped like crazy, but the 550 I have now just taps here and there, not very dangerous at all.
I think a 570 frame would be pretty much void of overlapping.
A lot of guys over here in Osaka run 650C front wheels, because a lot of them are riding sub-53 frames, there is a lot of overlapping problems.
That overlap in the OP's photo is a nightmare! It must be a 49cm frame or something.

PS cranks are going to make ****-all difference, to anyone who suggested that. Even going from a 175mm superbe pro to a 165mm (min and max length I think), you are going to take off 1cm. Clips alone can do much more, and cost 10 bucks, but I guess wont be the ideal size after you change