The map shows the altitudes of each village, you can do the math on the hoof. Up to Khopra Ridge there should always be somewhere to stay that accommodates the altitude gain guidelines.
Don't start at Tatopani, the daily ascents aren't favourable and as a newbie you may find this minor trail ascent difficult to follow. Starting at the other end will give experience of a main trail and how the painted trail marks pan out before you leave the main trail at Tadapani to follow a blue trail to Isharu/Bayeli etc
Maybe even start a little further out of Pokhara at Kande and go through the Australian Camp (still a red, main trail on the Ghandruk loop), a day shorter? Remember to leave the Ghandruk loop at Tadapani.
You could get a pair of hiking poles very cheaply in Pokhara, probably Chinese knock-offs but ok for a short trip. Test before buying, put some weight on a stretched out pole to test the locking mechanism.
Get early starts. Ask questions. Take directions from children with a pinch of salt.
