That should probably be fine. There's a chance your original fork was 80mm, which would be a fairly significant change in the handling of the bike if that was so, and would put more stress on the frame. You will need to reasonably accurately cut the steerer so that it is 2mm shorter than the top of the stem or top spacer (if you have spacers above the stem), then install the star nut evenly so that you can preload the headset appropriately. You will also need to move the crown race which is press fit onto the old fork onto the new. You may want to have a shop do the fork install, as it's faster and more consistent with dedicated tooling, and most shops don't charge particularly much for this particular service.