ome6a1717
I think that should run fine, however if the memory use was around 70 it would probably run even better on low-end machines.
I made a platformer before and was using around 50mb of memory use with a ton of sprite objects as well but my sprite objects were more low-res. If you want you can try this to save ram:
Re-edit the size of the sprite objects on the C2 editor "the edit image option on sprite objects". Try making it smaller on the editor and then resize the image on the canvas to the original size you had it.
For example: lets say you had an image that was 600x600 (600 pixel width by length) on the image edit and 256x256 on the canvas on construct 2. What you would do is change the 600x600 to 300x300. This would make the image on the canvas smaller, so you have to resize the image on the canvas back to 256x256.
I'm not sure if I clearly explained that or not, if you don't understand what I wrote then comment here again. In general I'd imagine for a platformer you could probably save more space without removing any sprite objects just by resizing your images on the "edit image" option for sprite objects.