Yes, Arihant is enough for MHTCET Law Prep. One thing you could do is practice previous years papers of CLAT and DU Law Exam well, especially questions from Law, besides getting done with MHTCET Law Previous Years Solved Papers. You may parallely take a test series if available online for MHTCET Law.

For more information about MHTCET Law do follow the link below

https://law.careers360.com/articles/mh-cet-law