Touchweight doesn't vary all that much on new pianos at least 44" tall (110 cm). But another dimension is the geometric leverage, or action ratio, which is primarily governed by the length of the keys. Piano keys can vary from 8" or 9" (spinet) to 24" for a concert grand. The fulcrum (balance point) therefore varies a lot. If you're playing right next to the fallboard, your finger can be only an inch or two from the fulcrum. A common recommendation is to make sure the keys are at least 12" long overall (which you'd have to measure inside the case).
Anyway, the touch on almost any new piano will be acceptable and consistent from note to note. The biggest obstacle to young learners is pianos more than 30 years old with worn-out, uneven actions.
I don't know if the piano you are looking at has the old or new key ratio. There is not a lot of difference. Both are back0-weighted to increase the touch weight somewhat. (Without this the touch weight of vertical actions can be some light and repetition can be unreliable.)
The front lever arm is fairly short on these pianos (as it is on most pianos of this size); something around 10" if memory serves. Possibly a little shorter, depending on the model. This is always a trade off between cabinet style and the amount of room it is going to take up. Most people buying small pianos are buying them, at least in part, because they are small. And one of the compromises made is in the key length. To be sure the keys could be made longer but then the keyboard would extend further out from the main piano body and would give the piano a front-heavy look.
Usually the rotational mass of the action components is low enough that inertia is not a significant problem to overcome.
As with grands the general advice is to get the largest piano you can consistent with budget and room décor considerations. The bass tone quality of the larger piano will be better as will the overall timbral balance.
ddf
