No need to buy in an LLC - you'll have better lending options in your names3. 

I am in the process of exploring financing options for my first deal and I came across the idea of government down payment assistance grants.From what I read, these grants can be used to cover the down payment on a low money down loan such as FHA loan, which I was planning to utilize anyway since I will be an owner-occupant.Has anyone used this in the past?

Welcome to BiggerPockets :)Lots of options to explore, real estate investing is definitely not black and white.

Alternative options include a cash purchase, requiring significant upfront capital, or a hard money loan with higher interest rates.

Which is the better option?

We have selected the builder plan and options for the structural changes back in January 2024.

Spoke about their other products...but no 5% down option. 

This would permanently damage the window, and so I'm looking for an alternative.

As you investigate your options in real estate, keep the following tips and ideas in mind:Determine Your Real Estate ObjectivesMake Use of Your Construction SkillsExamine Various ApproachesMaintain Your Mentorship LearningThink about short-term rentals and AirbnbCreate a Network and Look Into Local Real Estate MarketsSpread Out Your Investments Financial PlanningRemain FlexibleRemember, your hunger for learning and willingness to think outside the box are powerful assets in real estate.

Another option, is to get a Business/Investor VISA for Japan.