Not a real problem, but there are some points to note.
Firstly, any training for a PPL will have to be conducted under a Registered Facility, you could register yourself but you will still need to be supervised untill the Restriction is removed from the FI rating when you get it. All flights will have to be made to and from a licensed aerodrome.
As the aircraft is likely to be on a Permit you would not be able to be remunerated, in any event, read the permit to see what it does and doesn't allow. You will also need to see if the Insurance will cover you for private flights involving training. They may not cover student solo or even insure the aircraft if the owner doesn't hold a licence.
You will need a minimum of 5 hours experience on the aircraft before instructing on it. Not a legal requirement but recommended.