You have fantastic taste in cars.
I think you'll find it will come down to budget and what is available on the market when you are ready to purchase.
Personally, when I was searching I wanted either a vspec I or vspec II. Was not fussed as there are only a few small variations between these two particular models. I just wanted her to be clean, close to stock (In the hope that she has had an easier life) and bayside blue.
A base model could meet your requirements. Based on your plans, it just depends if you want the factory diffusers and extra sensors on the MFD. You may already have plans to change the diffusers, suspension - etc so take this in to account.
I suggest going out and viewing a few that are currently on the market. What I found when shopping was although they are all R34 GTR's, they all have an individual different feel and personality. Some I could sense may have seen a bit (or a lot) of track time, others were still nice and tight with KM consistent with the age and wear and tear presented.
Dont focus too much on 'model', but more so on 'condition'. And when it does come to 'budget', remember a bit more money wisely spent now on a well presented, reliable example may mean money saved later.
Depending how particular you are, patience is a virtue. Some of the cheaper examples have been for sale for quite some time and may raise a few educated eyebrows.
Hope this helps, good luck with the search and I look forward to seeing the result.