Ive had some good results with tissue culture plants. Once you get over how little the plant is and think ‘is that it’ they’ve grown really well. Another benefit, especially with the landscaping you are doing, you won’t get any snails!I will try Helanthium and Rotala, should I buy it as tissue culture or potted plant?
As for your comments about copying, I would say it isn’t copying, just using a template to ensure you are fitting within rules of the style you have chosen.
It’s going to look really lovely, please keep posting photos of the progress