Hi,
It's great that you have more seeds of the strain but that's no guarantee that your next pheno will be like THAT! It's always a great idea to put a clone aside just in case a plant turns out to be the ONE! That sure is a promising looking pheno and if you can clone it or re-veg it you'll always be able to reproduce the SAME exact dank plant time and time again for years... As long as your plant's still alive it's not too late to clone or re-veg.... Re-vegging takes time but may be worth it for that AK47 pheno... It's a heavy pheno and VERY dank... Do you have a separate veg area? You could still take a clone and it would root but it will take it 6-8 weeks to get healthy 5 bladed leaves and veg growth going again.... but a clone would start that process before you harvest your plant if you have a veg area that you can keep it under long veg lighting hours...
Cloning is always shrouded in mystery until you do it... And then it's like there's nothin' to it more often than not... Look at some of the stickies on cloning... It really is EASY! You have to be patient when revegging a clone in flower but it sure can be done and you'll preserve those genetics and won't have to go through sexing again either... Unless you want to grow another strain from seed and then save the best pheno to add to your 'mother' stock for future grows and you can keep building a nice selection of phenos to clone from over time. If you don't have much veg space you can use a small closet and when mothers get too big just take a clone to keep the pheno in your grow and either flower the large plant or destroy it...
Happy Growing!