Kitchen remodeling design, fixtures and installation

[Philip L.]

Just about to start a complete renovation of a rental property I purchased this week, one of the things the property needs is a new kitchen.

This is the first time replacing a kitchen so I have a few questions and hoped you guys could give me some top tips.

My plan is to buy all the cabinets, counter tops, materials and appliances a mixture of new and used then have a contractor install/fit the entire kitchen.

Questions
is there a decent kitchen design software anyone can recommend that can help me design the layout with measurements and visuals?  
 
On the second hand market I've seen a good number of complete kitchen cabinets that have been removed from renovations, they seem to save money but considering how precise everything needs to be in a kitchen are they worth considering or am I best off just buying new? 

Anyone with experience of installing a new kitchen for a rental property offering any advice or tips that would be appreciated thank you   

[Philip L.]

@Matt Lewis 
@Dawn P.

So sorry that I didn't reply back to you guys I posted this message at the start of the project and this renovation has taken over all my time.
Thank you for the replies and advice, in the end I ended up purchasing a used kitchen off facebook marketplace as it had a lot of cabinets and looked in good condition in the photos. Big learning lesson ask to see the photos and maybe a video of the units after they have been removed! - Hired a Uhall and traveled about two hours to pick them up, got there and they had not been taken out with a lot of care, long story short I renegotiated the price and purchased them.

Over the next two weeks I stripped them down, decreased, sanded, primer, sanded again!, painted and rebuilt - took way longer than I had expected. Lesson number two it is only worth refurbishing if already installed (in my opinion)

I am happy with the way they turned out in the end, hopefully they will be installed with new counter tops next week and I will update this reply with before and after photos.

again thank you for replying to me with your advice