Is it possible to switch Visa TYPES in the NL?

Hello!

I am making a move to the Netherlands this January, cannot afford the help of a relocation assistance agency ($5 to $6K!?!), but am trying to sure up the check-list to follow the lawful DAFT VISA process (including my business plan and the minimum required Dutch business account deposit). I already have a BSN number from a previous stay in the Netherlands a couple years ago. I have found a short-term (6-month) rental and will receive a sponsored letter of consent from the the landlord/owner for business registration and municipality, as it is different from the one I registered with two years ago.

My goal is to be of service and ultimately stay indefinitely - pursue permanent residency and/or citizenship.

It is possible to switch Visa TYPES, if offered an opportunity for contract (long-term) work, from DAFT to sponsored employment, if the opportunity presents itself?

Has anyone experience with this?

Thank you for information.