My first recomendation is to use HeidiSQL
Second, while you are not in production, you may want to open your DB of your VPS for outside connection: this will give you an approach on how fast is your app making the calls.
Third, while mysql and Sqlite use a very similar syntax you will have a lot of problems translating parts of your SQL statements.
Fourth, be aware of tools like SSH and XRDP, also, B4J bridge is AWESOME for testing both the server and client solutions.
I mentioned in the other thread, i also have a 1and1 VPS server and was very easy to configure.