Recreate 3D and CAD designs for rehabilitation retreat in Spain

Hello,
I am looking for someone to recreate some CAD and 3D designs for a rehabilitation retreat that I am trying to raise funds for.
I previously had some CAD and 3D designs created for me in the past and I would like to get a quote to make some improvements and amendments to the previous designs, I have included some documents that describe these changes..
The design documents themselves are a bit immature and they have many incorrect visualisations Particularly in relation to the sizes of the buildings. Ideally I would like to get actual building developers to draw their versions structures so that they can be presented to the construction companies as it will significantly help the progress of this project.
When I find correct designer for this task I will forward them the current drawings as well as a list/document of the changes and improvements that I would like to be made.
I definitely need some advice and inspiration on the kitchen and bar area in the main hall building and I am interested in changing completely the design of the yoga studio to be a round or at least oval-shaped structure built from bamboo. So if you have any experience or inspiration in this area it would be much appreciated.
Also, I would like to get this work done as quickly as possible so if you are making a quote based on your hourly rate please ensure you give an accurate indication of how many hours it will take to complete this work and ideally a fixed price quote would be the best.

Kind regards,
Ryan Murray
P.S. I am disabled myself so I cannot create drawings to demonstrate what I would like in fact I cannot even draw a straight line because of the tremor in my hands so it's important that you fully read the documents that I have attached to gain a clearer understanding of what I am asking for.
I have to use voice recognition software just to write this message so if you are going to reply please make sure you have read the documents first as it will save me a lot of effort answering your questions.