Seems to be a bit of a mis-match in speeds there. It'll be hard work for the Moth driver and the Yak alike.
I've flown a Taylorcraft BC12D (American aircraft contemporary to the Cub, although a bit faster) as photo ship for vintage aircraft shoots with speeds similar to the Tiger and it's worked really well. Made the cover of a magazine in one case, so not bad. Although that was down to a great photographer and a well flown subject aeroplane as well, but the similar speeds helped this.
I've also formated on a T6 in a Pitts S1S, which is a little more challenging - more akin to the scenario you're describing and I promise you both pilots were working very hard.
Plus the petrol for a Taylorcraft or Cub at 15litres an hour is considerably less than a Yak52. Just a thought to consider broadening your options.