Are market surveys and research crucial to open any physical business to ensure its success?

All 3 options. That way the users can choose which is more convenient to them.

Quick answer on this one: talk with somebody who has already succeeded in this field (built similar product or company). He/she will be able to quickly get you on track and avoid common pitfalls of your industry. If this person can't help you 100%, he/she will certainly be able to point you other people to talk with among their network.

Do in-depth competition research. Find people doing exactly what you do and call/email and ask for pricing. Make sure you have exact specs for the "job" mapped out and use the same exact details for everyone you call. If you can't find anyone at all who does what you want to do you should dig deep and find out why nobody does it. There are probably good reasons.

1) Finding someone I can trust to fix things that go wrong (PS: If you are doing anything in the energy/HVAC/integration space I have a lot of experience in that part of the home market)

I've worked with nearly 100 startups over the last 10 years to launch their brands/online platforms and a common mistake I see is an initial overinvestment in the design and aesthetics when they start out. They spend tens of thousands of dollars and hundreds of hours trying to figure out the perfect logo, font, icon, packaging etc just to get their brand/service/product out the door. You can use design to really differentiate your company from the market, but early on there are other things that I think should take priority before overcommitting that many precious resources to design. That is absolutely not an excuse to be lazy or have poor quality work; it is more a lesson of seeing your design as an evolving concept and definitely an area where "great is the enemy of good" starting out. Designs and even brands can and should mature over time – I’d focus on a good quality and scalable design to start while seeking to iterate and mature it over time as your business grows in the first months/year after launch. I'd also say that while startups tend to overinvest aesthetically, they generally underinvest when it comes to organization and documentation around their brand. Things like style guides and other branding materials are critical so you can maintain cross-platform branding consistency (and as your brand/design evolves you can continue to maintain those standards internally and with third parties by just updating the materials.) they also tend to underinvest in the wireframing and planning/blueprinting stages of designing their technical platforms (spending time during that phase saves time and money come time to bring in the graphic artists.) So, to the question of “how much” a startup should invest; that is a little subjective. If you are a retail or consumer product brand of some sort I’d say spending a little more time and money makes sense since you have to include product and packaging design as well as possible displays in stores etc. If you are a digital brand then you may be able to get away with a more streamlined approach. If you are focusing on designing your software (web/mobile) applications then go through the wireframing process first so you can be crystal clear with your design partner what it is you’re looking for from them. It could be as little as a few hundred dollars or as much as $5-$10k starting out; it really just depends on what sort of startup you’re working on. Feel free to reach out if you’d like to discuss your specific needs and talk further about your exact design needs and cost expectations.