If you feel the risk of a HELOC is too much then you are  defiantly not prepared to invest.You are starting a business, a very secure and well proven business, but a businesses non the less and they do have risk and do go bankrupt.

If anyone used any of these professional before and experienced an exceptional service in a reasonable price please recommend me them.

See my BP blog posthttps://www.biggerpockets.com/blogs/8070/51492-why-is-zillow-so-far-off-in-utah-what-is-a-non-disclosure-stateZillow is a great "first pass" data tool, but it is negatively impacted by Utah's status as a non-disclosure state. 

You will pay less Taxes on the sale due to paying Capital Gains instead of ordinary income tax due to being flipped the same year you bought it.I am not a CPA and will recommend that you seek advise with a professional on that area, but if you flip to rent instead of selling on your first years, you tax bill will literally be almost non existent.Do not let this flip and some appraiser steal your future as an investor, on the next ones, try to invest a lot less on the rehabs and you should be fine!!!!!!!!!!

Non capitalized improvements you would deduct in the current year absolutely.

I am a 28 year old service member in the Navy. 

With that said, you technically can refinance any time you want after you close because these conforming loans generally have no prepayment penalty.The other aside that I will mention is that you will want to make sure you have sufficient comparable sales in your area that will be able to document enough value before you spend money on a non refundable appraisal.

I would collect a non-refundable option deposit from them up front, create a cash flow every month and if the tenant/buyer exercised their option down the road got paid again. 

Your "deal" may be a non-deal to them.

If I don't deliver, you have my fee to compensate you for the cost of my delay.For all the contractors out there that are going to jump on me, I have language in the contract to protect me from delays beyond my control.To me, anyone paid on a percentage basis for anything they do, is either underpaid or over paid for for the service they provide.