I use these same ferts and excel dosed with the same frequency in my moderately planted tank with low light. I obviously have a smaller tank so I dose accordingly with the exception of I never double dose the comprehensive, At this point my larger ruffle sword is growing one 18 in. leaf a week. My bacopa australis is growing across the top of my tank and provides some shade for my fish. My substrate is sand only. I make sure to put tabs by the swords, but I use enough to cover the whole tank. So I agree, this basic combination works. All my plants are healthy and growing, but some grow slow. I run my lights for 8 hours.
I'm doing a 20% water change once a week. That's important too. My pH is 7.8, my gh is 9 and kh is 5. Have you gotten you water report if you live in a city? What's in you water can make a difference. I get Chicago water, but my Villiage just updated its own annual water report, too. If you are on private well at some point you might want to get your water tested so you know what's in it. Of course Prime takes some of what's in mine out of it
Last I'd follow rivercats advice, but I just wanted to share what works for me.