Your gauges are a traditional unbalanced set with tension rising significantly from low to high, so while your lower strings can safely take a whole step the highest strings will be dangerously tight. The optimum way to get maximum tension is to build a custom set with equal tension strings.
Use this http://circlekstrings.com/CKSIMAGES/...nsionChart.pdf
to design your set and then round to the nearest .005 to choose gauges in a brand of your choice. Circle K Strings also sell balanced tension sets for any possible detuned tuning.
For example if you want to keep using the Warwick .175 then match the higher strings to it's tension: .175 .130 .095 .070 .050, this could be tuned up to G# standard easily.