Budget will always be one of the over-riding considerations. The challenge is to spend wisely within your limit so you get bang for your buck.
The suburbs you have selected, while affordable, were mass marketed to investors by marketing groups some years ago. As a consequence there are a number of landlord/tenant properties in those suburbs. Typically, and as a rule of thumb, it is homeowners who drive the property market - they are the ones who paint the front fence, mow the lawns, keep maintenance up to date, etc.
If you can try for something a little closer to Melb and within easy access to facilities.
THe Melbourne 2030 Plan may provide you with some guidance.