@Barkha, it is a good idea to have clearly defined bands and grades before scaling up. However, if you do decide to go for job evaluation, you can opt for a faster and simpler process like 'job classification' instead of 'point factor'.
Also, the remote policy can be designed specifically for your requirements. However, some aspects to include are:
1. Data security if working from coworking places or public areas
2. Overlap hours - timings when everyone needs to be logged in for collaboration and meetings
3. Flexible working hours and rules governing them