Restylane - Gone in 5 Months?

I'm not sure exactly what your question is, but I would say that it is unusual that the Restylane would be gone under your eyes after five months.  Normally, it lasts longer in that location.  It would not be so unusual for the Restylane to be gone in the nasolabial folds after five months.  You mentioned your injector was conservative and it is possible that using more next time could help your results last longer.  In regards to Sculptra, it is not a permanent filler.  Normally the results can last two to four years.  I would not recommend using Sculptra under the eyes, as due to the thin skin there, problems can arise.  Having fillers injected into your face should not affect your ability to have a facelift in the future.  

If you're asking about issues based on fillers and having a face lift in the next two years, unless you're having fat transfer additionally I don't think there is anything to be concerned about. It's all really dependent on what you want and what you're willing to pay and/or live with while you prepare for the lift.