Here's my character, Carrie, a very non standard druid (she's a magic-school dropout/druid pyromaniac

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Carrie, female human Druid 5/Elemental Savant (Fire) 2: CR 7; ECL 7; Medium-size Humanoid (human); HD 5d8+2d4+21; hp 48; Init +0; Spd 30 ft; AC 14 (+2 Leather, +2 Shield); Melee Scimitar +4 (1d6-1, 18-20/x2), Ranged Longbow +5 (not including Arrow bonus) (1d8/x3); SA spells; SQ animal companion, nature sense, resist nature's lure, trackless step, wild shape, woodland stride; AL CN (With Good tendancies); SV Fort +8, Ref +2, Will +11; Str 8, Dex 10, Con 14 (16), Int 12, Wis 17 (19), Cha 14.
Languages Spoken: Common, Druid, Ignan
Skills and Feats: Animal Empathy +10 [8], Concentration +13 [10], Diplomacy +10 [8], Knowledge (Arcana) +10 [9], Knowledge (Nature) +11 [10], Knowledge (The Planes) +10 [9], Spellcraft +11 [10]; Education (FRCS, All Knowledge skills as class skills), Elemental Substitution-Fire (T&B), Spell Focus (Evocation), Spell Penetration.
SQ-Wild Shape (Sp): 1/day, Carrie may assume the form of a natural animal, from Small to Medium-size.
Elemental Transition (Ex): Carrie is immune to magical sleep effects.
Resistance (Ex): Carrie has an innate fire resistance 5.
Elemental Focus (Ex) +1
Druid Spells Prepared (6/5/4/3/2):
0-Detect Magic (x3), Flare, Light (x2)
1-Entangle, Obscuring Mist, Sandblast (x3) (MotW)
2-Flame Blade, Flaming Sphere, Produce Flame, Treeshape
3-Cure Moderate Wounds, Regeneration Ring (MotW) (x2)
4-Flame Strike (x2)
Spell DCs: 14+Spell level, 15+Spell level for Fire spells, 16+Spell level for Evocations, 17+Spell level for Fire Evocations
Equipment: Amulet of Wisdom +2 (4,000), Belt of Health +2 (4,000), MW Composite Longbow (400), MW Arrows x30 (30), MW Leather Armor (160), MW Large Wooden Shield (157), MW Scimitar (315), Ring of Sustenance (2,200), Scrolls (Call Lightning) (375), Quaal's Feather Token (Tree) x10 (1,000), Sleep Arrow x10 (1,320), Wand of Cure Light Wounds (750), Wand of Cure Moderate Wounds (4,500), 60 gold remaining.
Description: Carrie is a vigorous 19-year old who likes to dress in wild, sometimes provocative clothing whenever she is able to. She has fair, slightly sunburned skin, light green eyes, and sandy blonde hair with a some red flecks in it, a partial testament to her growing elemental nature.
Personality: Carrie acts like she dresses-wild, often unpredictable. She's often impatient, somewhat bossy, and quick to anger, but she's also quick to lighten up. She doesn't care much about soceity's laws, or pretty much anyone else's but her own and tries to be as independant as she can.
Background: Carrie comes from the Shining Islands and was originally planning on becoming a wizard at a young age. While she was learning the basics of wizardry, becoming educated in the theory of arcana and the planes, she felt that what she was learning wasn't the calling really for her-she had always been a more nature-oriented person, and manipulating the forces in this way was just not the thing that she wanted to do-and on top of that it was just boring! Her decision was rash, but she had dropped out of the school without a moments notice, and took it upon herself to venture out into the desert. While there, she learned the traditions from a circle of druids, and once she got down the basics she took off to adventuring. Since then, she has taken a couple jobs as a mercenary, and also some journeys on her own.
Any chance I could trade out the Summon Nature's Ally line of spells for a similar fire spell each level? Thinking right now 1-Burning Hands, 2-Pyrotechnics, 3-Flame Arrow, 4-Fireshield, but that may be too much.
Also, technically, bows+arrows aren't allowed by druids, but I don't see a reason for these-it's not unplausible that arrows can be made of wood and bone, in that case, would it be ok to be used as a druidic weapon?