LHTH definitely covers everything you need for your preschooler to be ready for kindergarten. Here is a link to the introduction which goes into the scope and sequence.
http://www.heartofdakota.com/pdf/little-hands-intro.pdf
Here is some excerpts from it about alphabet/prereading concepts and math concepts.
Letter Activity
Daily letter activities emphasize the same letter and letter sound as the
fingerplay. Each unit includes each of the following letter activities:
* letter flashcards with corresponding sounds and motions
* letter art which increases awareness of the letter shapes
* letter action with whole body movement to trace masking
tape letters
* letter slide which provides tactile activities for each letter
* letter hide and seek with practice in finding a letter in context
and in matching uppercase and lowercase letters
Math Activity
One day in each unit includes a math activity. These activities gently
introduce mathematical concepts through guided play. The activities
reinforce the Biblical theme. A brief scope and sequence of the math
concepts is listed by unit below (Number ‘1’ corresponds to unit 1,
number ‘2’ corresponds to unit 2, etc.):
1 - patterns and colors
2 - patterns and counting
3 - sequencing letters and numbers (names and phone numbers)
4 - general measurement: comparing distances
5 - money: coin recognition
6 - counting steps
7 - comparing: few/many, once/more than once, tall/short
8 - ordinal numbers: first, second, third
9 - counting to 10: one to one correspondance
10 - patterns, shapes, counting
11 - general weight measurement: light/heavy
12 - auditory patterns
13 - comparing sizes: smallest/largest
14 - general length measurement: ordering longest to shortest
15 - matching and ordering by size: smallest to largest
16 - sorting and classifying
17 - counting, early addition/subtraction, zero
18 - counting, spatial terms, inside/outside
19 - duplicating patterns, spatial terms: away from
20 - counting and making sets
21 - tracing or copying designs and finding shapes
22 - counting: one to one correspondance
23 - comparing numbers: more than/less than/equal to
24 - counting and addition combinations that equal 5
25 - general measurement: area
26 - nonstandard measurement: “feet”
27 - sorting, counting, and graphing sets
28 - money: coin recognition, value, counting
29 - general time: yesterday, today, tomorrow
30 - number sense: more than 1 and counting forward/backward
31 - counting forward/backward and early addition
32 - general fractions: whole vs. part
33 - sorting and classifying: color, size, and shape
As for the literature study, I am using Sonlight p3/p4's parent guide and checking the books out from the library. It really isn't lesson plans more a list of books broken into weeks to read them and some suggested activities to do with them. We just read through the books. You could do the same with FIAR books.
My 2.5 ds is also sitting in sometimes on our storytime in LHFHG. He will sometimes sit in my lap and listen to me read to the bigger kids. He loves CLP's Nature book from the emerging readers and will bring it to me to read about "bugs".
Hope this helps you.
Val