I disagree with the statement low tech makes it harder to control algae. More light will always mean a greater potential for algae, IMO.
Light will depend on what plants you want to grow and more importantly if you choose to add pressurized CO2 or not. I don't like to count DIY as it is finicky and inconsistent. Not to be relied on for increasing your light, IMHO.
The 29 is a funny size, but my low tech is a 29 that was given to me. It can work. The fixture I have over it uses 24" bulbs, but it is about 20" above the water suspended from the ceiling, so the light spreads and is also reduced. I have zero algae and slow growth, perfect for a low tech. The low tech tank is my wife's favorite. Although when my high tech rescape fills in i think she will change her mind.
I would recommend low tech to start. It will help you learn slowly and get the hang of it. Low tech's can look great. You won't need CO2 injection and stick to low light. Low tech plants include cryptocoryne sp., anubias sp., mosses, java ferns. Combine those with some neat manzanita branches or other wood; you get one nice tank with lots of greenery. Plant it dense, as it will grow slowly and planting a lot of plants off the start will help avoid possible algae issues.
I recommend a nutrient rich substrate like ADA aquasoil. I would use 2, 9 liter bags.
Keep in mind what fish you want to keep also while setting up the tank, so that it is compatible for them. African cichlids won't be very nice to delicate plants and rooted plants, but in a tank of anubias on rocks they should do fine. I like a dense low tech jungle style with a school of cardinal tetras, cherry shrimp, apistos, ottos.
There is a lot to read in the new to aquatic plants section. A great article on setting your goals and how to get started, which was a great help to me as a beginner.
READ READ READ....and READ SOME MORE! can't say it enough. Arm yourself with information and be a critical thinker.
www.aquascapingworld.com is a great place in addition to this site. there are a multitude of beginner friendly articles.
Ask questions when you have them or search the forum's. Odds are someone has had the question before.
Welcome and good luck!