Will a singel Solvent (alkohol) recrystalizering be enough make the product 100% pure?
Definitely not, such a purity is not possible to attain. You usually need to recrystallize several times to achieve purities exceeding even 99.5%, and the number of solvents used in the recrystallization does not determine purity. Every crystal is unique, and needs its own unique treatment for the best and most efficient purification. A lot of solvents and solvent systems will work okay, but may either cause loss of product or give an inferior purification - or both. If you do not have a pre-determined solvent system you have to go by trial & error.
If you cannot find out how to dry solvents after reading the documents at rhodium.ws > Chemistry > Equipment & Lab Technique > Solvents then you really need to re-read those documents and use the search engine here to learn more about practical chemistry.