Scott - if you are
transferring it from yourself to you plus wife then you need AP1, TR1 and ID1/ID3. Not TP1
If it’s a gift then it’s Scale 2 on half the current value. Complete panel 4 of AP1 with “Full market value” and £240k.
You don’t have to use a solicitor but we’d always recommend you do as they are familiar with the forms, process, legal issues and can also verify your identities